Oh my. This is it. This is the perfect storm. The clothing is more insane than it's been in weeks, Benny's pointing at the only thing anyone could be looking at, someone's inexplicably not looking at it anyway, Violet's squatting, the cover makes it appear that the titular mystery is solved ("Oh, there it is!")... In the future, the sages will ask of me: "Brian, what Boxcar cover is above all others?" and I will say: "The Mystery Horse." And they shall reply: "What was the mystery?" And I shall say: "I don't know, maybe the horse was missing? I don't read these." And lo, they shall say: "Just curious. Wanna play frisbees?" And I shall say: "Cool beans."